Concrete molding apparatus



Nov. 3, 1 931. w. KLEl-rz CONCRETE MOLDING APPARATUS Filed sept. :5.1927' 5 sheets-sheet 1 INV NToR.

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A TT() EYS.

w. KLElTz 1,830,397

CONCRETE MOLDING APPARATUS .Filed sept. s, 1927 s sheets-sheet s Nov. 3,1931.

INV MOR.' mm

ATTO NEYS.

o; retained Nov. 3, 1931 WILLIAM XL1-nmz,y or ALBA-NY, NEW Yom:y f

- CONCRETE MoIQDING Arrnmi'rus Y applicant); ineay september a, 19a?.serian No. 217,323.

' rThis invention relates tojconcrete molding 'apparatusand moreparticularly to apparatus'for the finoldingof poured concrete Walls,loors, partitions and other like structures.

'15L An .object of theinvention ist to 'provide Y molding :apparatusdesigned to enable the pouring of hollow orfdouble'concretel Walls, Yfloors, partitions and otherlike structures.-

According to the'inventiomuse is made of le? molds spaced apartandrigidly'V held inv such spaced relation until the concrete 'poured ina o. the molds has become -sufficiently hardenedto i permitfthe `removalthereof."` Use is made in g the invention ofperma'nent spacing andreino' 15 forcing members andalso of y'covered `bracing I membersapplieda-fter'the molds havebeen y removed.' 1 A .y ..1

Vv `,Other features of the invention): f I Will-become apparent'byreference to thefol-` Y zO-flowing detailed descriptiony read inthelight `of-the accompanying.draWings,Wherein "f Figure 1=is a'vievv invertical section illus-` trating an embodiment'of the invention r Fig. 2v'is asimilar view of thev same strucand with the bers in place g" nFig. 31s a top plan view of the structure illustratedinFig.1;

` 307- Fig. 4 is an enlarged fragmentary section taken on thelines 1f-4'of Fig. 3 with they ,connecting bolt removed; I .l Fig. 5 is 'a View inksection taken on the Vlines 5-'5'of-Fig. 4; l H 4 b 35- Fig. 6 is afragmentary perspective View ovfone ofthe vspacing*elernentseutilized inthe invention;Vv i* f o Fig. 7 isape'rspective view reinforcing'andspaeingyokes; 4Q Fig. 8'is a plan view'illus'tratingthe application ofthe inventionv1 the formation' of a curved solid or hollow-"Wally" 'z "lFi 9: is a fragmentary 'sideelevation ofV a`r Vmodified arrangement ofthe inventiomand' j: Fig. lO-isia'sectional elev ltion taken onftlie vlines 10.-10 of Fig.19'.

11nv carrying outlthefinventiomuse ismade of a lplurality of 'plates 1 0which may be ofe Vsheet-metal ofthedesired thickness, length Y "'OIandbrea'dth.l As ybefore stated, 'theinvention is especially'applicableto the formation of Walls, ioors, ypartitions andl other likestructures, but, for the sake'of brevity, such structures arehereinafterftermed Walls, and itis to be'understood that the use of such55` termin the specification and" claims is not to be *consideredyalimitation ofthe invention. On one/side of each ofthe plates 10 is`secured'ajpla'te 11 which may be either a corrugated plate or anylother deformed plate, 60 but, forfthe purposes of illustration, suchplates areherein illustrated as corrugated. These plates' maybie-secured 'to the plates 10 in Y any desiredmanner such asby spotWelding 0rby anyother suitable means. f

' In the practice of theinvention, use is madel offafpluralityof spacingand reinforcing yokes 12 preferablycorrugated as shown andyhaving-i'flangedl ends 13 and an opening 111 asillu'strated.' Use isalso made of a number of rings '15 and ay plurality of sleeves 16.ARings 15 and sleeves 16 are so constructedk as to permit contractionradially whereby they' t A may bekrexnovedffrom'tlie hardened concreteture With the molding apparatus remove/CL',V spacing and insulating'memf each oflthese membersoverlap and the inner f edge of each -is bentback upon itself to proat the proper time during the process of Wall;formation. lFonthis purpose, the edges of videv a recessforfthereception of a suitable tool'r'for contracting the member.'v Anum-'30 berrof'lZ-bz'x-r's'l' and'angle bars or wales 18 or othersuitable support are utilized in the invention in ythemanner to behereinafter" explained in detail.

Having described thel component partsis utilized in carrying out myinvention, the' operation' anduse'of'the same is as follows. A of'one ofther number 'ofthe-'plates 1()l having the corrugated backing llareplaced in position as'indicate'din-Figs.v 1 i,and 3. In order that theplates ybetweeny which the concrete is to be poured may-be spaced apart,the yokes 12 are so positioned that' the flanges 13 thereof rest againstone of the plates 10. At the 'same' time, ythesleevesor collars 16 areso positionedas to extend 'throughthe openings 14 inthe yokes 12. Tofurther accomplish the' purposes of spacing, the rings 15 are placedbetween those portionsof the yokes having thefopenings 14 therein andthe plate l0 opposite lthe plate against which the flanges 13 rest. Asuitable bolt 20 passing through an opening in one of the wales 1,8 andhaving its head' resting thereagainst passes through openings in theplates and 11 in such a manner as to be completely encircled by thecollar 16,. The opposite end of bolt 2O passes through a similar Wale 18and ainut 21 Ais employed for securely holding the various parts intheir correct position. Y

Since it is desired that the'- wallsY to :be formed shall have a spacetherebetween, use is made of the Z-bars 17 havinga number of openings 22spaced at intervals along one of the flanges thereof.v Such bars arespaced between the inner plates 11 in lsuch a manner that the openings22 rest over the; bolt 20 to permit the flat portionof the Z-barl toseat onl the bolt. When adjusted as shownin the drawings, these'yZ-barsserveto space the renecessary to hold all ofthe parts firmly.Acon- .crete ,75 maybe .pouredfinto thegspacebe- Itween therespective-.plates 10.'.` Afterthe concretehas become sufficientlyhardened, it is.L ,desirablevv thatV the y plates be removed for,furthervuse. To accomplish this,-advantage is taken ofthe deformed orcorrugatedfplates 11 which arespaced apart by the bars 17..

Due to these corrugations, a suitable, tool may be utilizedforfdislodgiug the barsl? as illustrated in Fig. 1topermittheir-removalf-yAny desired tool may' be'usedf forv.-this'purpose, the only requirements'loeing.

l that the tool'be so shaped as to pass between one of the flanges ofthe Z bar and-adepres# l sion inthe corrugated platell.-rr

/Having removed Z-bars17, the boltsQ()I Vwithdrawm permitting the,removal of plates 10 with their' accompanying'plates 11.vv Since boththe rings and the sleeves 16 are-capa ble of being `contractedradially,`a suitable tool may be utilized. for j contracting kthese the concrete.

ings in the concretewhich maybe used; for

the :reception of'a bolt. 25. 'fon permanently holding the wallsAin-spacedIrelation. As

shownin Fig. 2, the head offfthe bolt ,25 rest-s against one oftheyokes12 while the' nut 26v on the otherend thereof rests against a cor-Vresponding yoke.v In .order thatthe two sections of concrete may bepermanently held in spaced relation and furtherin order fto provide amore perfect insulation, Yuse is madevv of'the following arrangement.VBefore the' permanent bolts 25Lare placed'in positionav number of.continuous spacing strips 'exi tending from top to bottom ofthestructure and ofv anydesired width and thickness are` ,placedv inposition. yThestrips are preferspective pairs ofplates from each other.A Having tightened the nut 21 to the extentk "dividingwall of extentequal tov that of the concrete walls.' .These boards for the sake ofconvenience may also be provided before installationfwith' holesv forthe passage of bolts 25. For the purpose of providing a continuous airpassage hetweenthe respective layerV of composition boards a portion of.each

of thev spacing strips 50: is cutaway asv indi.-

catedY at 52, The ,airVV passage so pro-duced serve to better insulatethe structure than has been found to'be true with an arrangementconsisting of a'number of-separate airjcliambers., After the bolt 25has'been lplaced in positiomrthe remainder of the opening furvnishedbythe withdrawal of rings 1 5 may be filledl with Vconcrete topreserve the continuity:

of surfaceof the wall; y e

l In theevent it is Vfound undesirable to make use of permanent boltsthe embodiment illustratedin Figs'. 9`an'd 10 may be Vused especiallyfor, light structures. This -a`rrangement; is composed .of Jflat platesf10 wand deformed plates 11 as vin'thestructure previously described.Injthis structure, parts corresponding jto vthose v4hereinbeforedescribed are given thesame reference characl tersfwith the Yaddition ofa primeto each numerallnstead of the 'bolts 20, use V'is v madeofirelatively thin metallic tie bars 60 providedlwith a numberv of holesfor the receptionfof pins lIn order that the sections 0f forms 10. ywiththeir deformedplates 11 may be connected together each edge of thedeformed plates 11 is bent as indicated at 61 'whereby a spline 62 maybe insertedbetween the'bent fportion 61andplate 10. Splines 62 are oftheysame length as the plateslO and are provided with upset portions 63V ofthickness equal to that oflplatesl 10-.' f The i splines and theirupsets are recessed atinter-j valsy toaccomniodate the tie barsr60,ysuch recesseslfextending inwardly'from oneedge lthereof to such adistance that therecesses in the upsets arev of 'depth approximatelyequal. tothe thickness ofthe tiefbars.

Beforegthe formsare assembledfor use it has beenjfound .advisable toinsert pins/64 and 65 in holes extending through the tie bars.

assess:

ence` to this that the edges of the upper forms jand 11l restsubstantially lagainst the tie `barsf60. The. lower .form 10 may then'bepositioned and held in place by permitting the previously freeedgesfofthesplines to slide Yunder the shoulders 61 ofthese forms untilthe edges of forms l0 closely approach the edges of upsets 63- Thus'theopenings l between the edgesv of the forms l0 is closed by splines 62and their upsets 63. Z-bar's 17 arey placed as shown to properly spacethe VVpairs of forms while wales 18 having apertures therein yare placedagainst the outer' formsll and held in place byfpins66. Concrete maythen be poured intothe forms andr permitted to harden suiliciently forthere` moval of the forms. a After the forms have been'removed theprotruding yportions of the tie bars 60 may be broken oi, such procedurevbeing facilitated Vby Vpreviously scoring or l otherwisewealeningl thebar at the points ina dicated'by dotted lines 67 vIf'so desired'the'pins 64 may be removed andthe. openings lett thereby illed withconcrete to preserve the continuity of surface of they walls. Since the'tie bars remain in the concrete andare i fp'revented from beingwithdrawn in either div' rection by pins 65, they serve to hold thewalls properly permanently spaced." If it isdesired suitable insulatingmaterial may be inf sertedbetween the walls in any desired man- `ner-x@f It isf to be understood that the present in'- vention vis not to belimitedbythe illustrated embodiments but is to be limited only to suchstructures-and yarrangements as are defined by the following claims.

v What l claim as newandy desire to secure i i by Letters Patent of theUnited States is:

tweenfthe pairs of unit-s and engaging' the de`-- V'ing Z-bars andadapted-to be removed by 1.--A mold of the character described, in-

cluding vunits composed of molding plates and deformedbacking,platesthereon, said parts being arranged'intwo'p'airs of saidunits spacedk apart and vadapted ,to receive concrete poured between themolding plates yof each pair of units, andV spacers located beformedbacking plates,said Vspacers compristhe insertion of a tool through aspace prov vided by the deformedbacking plates.

V2. A molding apparatus of thecharacter described, comprising two pairsVof plates spaced apart, deformed "backing yplates secured to thefirst-mentioned plates, yokes betweenthe plates of eachV pair, sleeveswithin andpassing through the yokes, .collars be,-

, tween the yokes and the plates, and members securing 'said partstogether, said sleeves and collars adapted to be removed afterv themoldingzoperation' for the `.accommodation of securing vbolts andnutsthereon.

f Af molding apparatusl of vthe character described, comprising twopairs of plates* spaced apart, corrugated backing plates seplate.'

cured to the first-mentioned,` plates, yokesk betweenthel plates of?feach pair, sleeves :within and; passing l through the. yokes, collarsbe# `tlweerr'tlie1yokes and the plates,and 1members securing saidpartstogether, said sleeves 'and collars 'being' radially contractile;,whereby 'iok they maybe contracted and removed from the Y wall for-theaccommodation ofsecuring bolts.

molding device `of' the fharacter described,: including'two 'pairs ofplates spaced apart fand adapted to receive lpoured concrete between'eachl p air-,corrugated Jplates secured tothe backs ofV fthefirst-mentioned *plates7 yokes located' between th'ejpairs jof plates,sleeves Vwithin :and passing'thro'ughfthe yokes,

collars between theends ofgthey'ok'es and the first-mentioned plates,anglefjbars outsidey of v the outside y'corrugated I'}: lates, holding`bolts projected through 'saidlast-mentionedbars; all of said plates andthroughA the'sle'eves, colarsand vyokes, and nuts on thejends of'saidsis - 53A"molding'apparatus'of the' character described, including` twopairs "'of plates spaced apart andT adapted tof-receivefpoured concretebetween each pair, 'corrlrigated plates secured to the backs "of therst-mentioned plates; `yoke; located between vthe pai-S 0f plates,SleeVeS'iWthii and passing through thev yokes, fcollars `bettveen" `theends"l of fthe yokes f and the vfirst mentioned platesjan'gle' barsoutsidel of the outsidecorrug'a'ted plates,

holding bolts Aprojectedftliroughsaid last-Ay mentioned bars, all of'said platesand'throu' the sleeves," collars and yokes, `nuts"''on t eends of said,bolts,jand spaoerscbmprising 'Z5 bars clapable'of removalor'dis'placement'by the insertion 6. In'app-aratus 'of the characterdescribed the combination *comprising two pairs of molding plates,removable'VV rods j extending through'said plates, means supported by"said rods yfor' spacing said pairs of molding plates, parts Vbetweenthe plates of each of said pairs of plates supported by said rods andsubstan ytially perpendicular to said rods which are adapted to remainembedded in concrete poured between the plates of said pairs of plates,and collars between said parts and the outer molding plates of saidpairs of plates vto remain embeddedin concrete poured be' tween theplates of said pairs of plates and having portions thereof .which aresubstantially parallel to said moldingv plates and which have holesthereinthrough which said rods vpass, means for maintaining said partsat,` predeterminedl distance 1- lfrom the inner plates ,ofsaid.pairsofmoldingplates andeolf'- lars betweenrsaid parts and theouter plates of said` moldinggplates shaving Isubstantially Y f greaterdiameter than said rods. v A, 8.In'apparatus0f the character describeforl making j-hollow Cementitious forms, the' combination comprising twopairs of molding plates, lrnfeansfor spaeingone palr of molding platesfromtheother Ap airof molding plates,

means for spacing ,the yplates of each pairfromeach other, means vformaintaining lloetweenthe plates of each ofk said-pairs of platesopposite parts...adapted ytobe embedded in concrete poured vkbetweenkthe plates oi lsaid pairs of plates,V agpo'rtion of saidv parts beingsnbstantiall'y'parallel'to said molding plates and having. la holetherein, removable means for*` making holesl registering with the holesl j ofsaidpartsinfeonerete poured between saidv parts `and the "innerY,mol-ding plates of `said' .f pairs 'of vplates and means for makingheles 'havingva larger diameter than' the holes in said, partsin.eonerete ponred between` said parts fand 'the-outermolding platesvofsaid platesn'means forspaeingfsaid molding plates,

alpart adapted Ito be.` embedded in concrete Y molding,plateshaving ahole therein, means' betweenthe inner surface ofsaidpart andan f poured-loetween'v tlreplates of said pairs of for maintaining saidpartinposition removable meansavfor, making 1n concrete pouredinnerzffmolding fplatefof] said pairs ofvplates aholelregistering-witlivvthe holepin said part andfine'ans for preventingpouredl concrete from covering ioutersurface 0f said partadjaeenttheholeingsaid part. v-

. In testimony whereof,l I have kSigned any Y Y nameV to'thisspecification.

WILLIAM KLEITZ.:

9:.In apparatllof the eharaeter deserihedl for making-hollowcementitionsforms, the `i combinationjcomprisingtwo.pairs of molding

